From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Report on three broken valve springs that failed during a 15,000-mile test.
| Identifier | ExFiles\Box 97\4\ scan0277 | |
| Date | 2nd January 1939 | |
| 4006 also HSH To H1/EJW. from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}4/MH.{M. Huckerby}2.1.39. VALVE SPRINGS (15,000 MILES TEST). Will you please give a report on the three broken valve springs we attach with this memo. The particulars of them are that they failed under 500 miles whilst on the 15,000 test on 8.B.V. and are to EB.3256 being produced by the Tempered Spring Co. We are particularly anxious to know whether there is any obvious reason for the failure in view of a seam found in a similar spring of a customer's Wraith WXA.9. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||